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Sungwoo Kim 19a7814396 Bluetooth: L2CAP: Fix u8 overflow 
[ Upstream commit bcd70260ef56e0aee8a4fc6cd214a419900b0765 ]

By keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases
multiple times and eventually it will wrap around the maximum number
(i.e., 255).
This patch prevents this by adding a boundary check with
L2CAP_MAX_CONF_RSP

Btmon log:
Bluetooth monitor ver 5.64
= Note: Linux version 6.1.0-rc2 (x86_64)                               0.264594
= Note: Bluetooth subsystem version 2.22                               0.264636
@ MGMT Open: btmon (privileged) version 1.22                  {0x0001} 0.272191
= New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0)          [hci0] 13.877604
@ RAW Open: 9496 (privileged) version 2.22                   {0x0002} 13.890741
= Open Index: 00:00:00:00:00:00                                [hci0] 13.900426
(...)
> ACL Data RX: Handle 200 flags 0x00 dlen 1033             #32 [hci0] 14.273106
        invalid packet size (12 != 1033)
        08 00 01 00 02 01 04 00 01 10 ff ff              ............
> ACL Data RX: Handle 200 flags 0x00 dlen 1547             #33 [hci0] 14.273561
        invalid packet size (14 != 1547)
        0a 00 01 00 04 01 06 00 40 00 00 00 00 00        ........@.....
> ACL Data RX: Handle 200 flags 0x00 dlen 2061             #34 [hci0] 14.274390
        invalid packet size (16 != 2061)
        0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04  ........@.......
> ACL Data RX: Handle 200 flags 0x00 dlen 2061             #35 [hci0] 14.274932
        invalid packet size (16 != 2061)
        0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00  ........@.......
= bluetoothd: Bluetooth daemon 5.43                                   14.401828
> ACL Data RX: Handle 200 flags 0x00 dlen 1033             #36 [hci0] 14.275753
        invalid packet size (12 != 1033)
        08 00 01 00 04 01 04 00 40 00 00 00              ........@...

Signed-off-by: Sungwoo Kim <iam@sung-woo.kim>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-21 17:36:38 +01:00
..
6lowpan
6lowpan: iphc: Fix an off-by-one check of array index
2021-07-22 16:19:03 +02:00
9p
9p/xen: check logical size for buffer size
2022-12-14 11:37:17 +01:00
802
net: 802: remove dead leftover after ipx driver removal
2021-08-13 16:30:35 -07:00
8021q
net: use eth_hw_addr_set() instead of ether_addr_copy()
2022-08-31 17:16:37 +02:00
appletalk
net: socket: rework compat_ifreq_ioctl()
2021-07-23 14:20:25 +01:00
atm
net/atm: fix proc_mpc_write incorrect return value
2022-10-29 10:12:55 +02:00
ax25
net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg
2022-06-22 14:22:01 +02:00
batman-adv
batman-adv: Use netif_rx_any_context() any.
2022-07-29 17:25:07 +02:00
bluetooth
Bluetooth: L2CAP: Fix u8 overflow
2022-12-21 17:36:38 +01:00
bpf
bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb()
2022-11-26 09:24:35 +01:00
bpfilter
…
bridge
bridge: switchdev: Fix memory leaks when changing VLAN protocol
2022-11-26 09:24:40 +01:00
caif
net: caif: fix double disconnect client in chnl_net_open()
2022-11-26 09:24:39 +01:00
can
can: af_can: fix NULL pointer dereference in can_rcv_filter
2022-12-14 11:37:22 +01:00
ceph
libceph: fix potential use-after-free on linger ping and resends
2022-05-25 09:57:28 +02:00
core
netfilter: conntrack: Fix data-races around ct mark
2022-12-02 17:41:04 +01:00
dcb
net: dcb: disable softirqs in dcbnl_flush_dev()
2022-03-08 19:12:52 +01:00
dccp
dccp/tcp: Reset saddr on failure after inet6?_hash_connect().
2022-12-02 17:41:07 +01:00
decnet
net: Fix data-races around sysctl_[rw]mem(_offset)?.
2022-08-03 12:03:51 +02:00
dns_resolver
…
dsa
net: dsa: sja1105: Check return value
2022-12-14 11:37:25 +01:00
ethernet
move netdev_boot_setup into Space.c
2021-08-03 13:05:26 +01:00
ethtool
ethtool: eeprom: fix null-deref on genl_info in dump
2022-11-03 23:59:14 +09:00
hsr
net: hsr: Fix potential use-after-free
2022-12-08 11:28:41 +01:00
ieee802154
net: ieee802154: fix error return code in dgram_bind()
2022-11-03 23:59:14 +09:00
ife
…
ipv4
ipv4: Fix incorrect route flushing when table ID 0 is used
2022-12-14 11:37:28 +01:00
ipv6
ipv6: avoid use-after-free in ip6_fragment()
2022-12-14 11:37:29 +01:00
iucv
net/iucv: Replace deprecated CPU-hotplug functions.
2021-08-09 10:13:32 +01:00
kcm
kcm: close race conditions on sk_receive_queue
2022-11-26 09:24:50 +01:00
key
xfrm: Fix oops in __xfrm_state_delete()
2022-12-02 17:41:06 +01:00
l2tp
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
2022-06-22 14:21:58 +02:00
l3mdev
l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu
2022-04-27 14:38:53 +02:00
lapb
…
llc
llc: only change llc->dev when bind() succeeds
2022-03-28 09:58:46 +02:00
mac80211
wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration
2022-12-08 11:28:40 +01:00
mac802154
mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()
2022-12-14 11:37:25 +01:00
mctp
mctp: Fix an error handling path in mctp_init()
2022-11-16 09:58:22 +01:00
mpls
net: Use u64_stats_fetch_begin_irq() for stats fetch.
2022-09-08 12:28:07 +02:00
mptcp
mptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb
2022-08-31 17:16:50 +02:00
ncsi
net/ncsi: check for error return from call to nla_put_u32
2022-01-05 12:42:37 +01:00
netfilter
netfilter: ctnetlink: fix compilation warning after data race fixes in ct mark
2022-12-14 11:37:23 +01:00
netlabel
netlabel: fix out-of-bounds memory accesses
2022-04-13 20:59:10 +02:00
netlink
net: genl: fix error path memory leak in policy dumping
2022-08-25 11:40:25 +02:00
netrom
netrom: fix api breakage in nr_setsockopt()
2022-01-27 11:04:00 +01:00
nfc
NFC: nci: Bounds check struct nfc_target arrays
2022-12-14 11:37:27 +01:00
nsh
…
openvswitch
netfilter: conntrack: Fix data-races around ct mark
2022-12-02 17:41:04 +01:00
packet
packet: do not set TP_STATUS_CSUM_VALID on CHECKSUM_COMPLETE
2022-12-08 11:28:41 +01:00
phonet
phonet: refcount leak in pep_sock_accep
2022-01-11 15:35:16 +01:00
psample
…
qrtr
net: qrtr: start MHI channel after endpoit creation
2022-08-25 11:40:29 +02:00
rds
net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks()
2022-10-26 12:34:49 +02:00
rfkill
rfkill: make new event layout opt-in
2022-04-08 14:23:00 +02:00
rose
rose: Fix NULL pointer dereference in rose_send_frame()
2022-11-10 18:15:29 +01:00
rxrpc
rxrpc: Fix race between conn bundle lookup and bundle removal [ZDI-CAN-15975]
2022-12-02 17:41:04 +01:00
sched
net: sched: allow act_ct to be built without NF_NAT
2022-12-02 17:41:06 +01:00
sctp
sctp: fix memory leak in sctp_stream_outq_migrate()
2022-12-08 11:28:41 +01:00
smc
net/smc: Fix possible leaked pernet namespace in smc_init()
2022-11-10 18:15:31 +01:00
strparser
bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding
2021-11-18 19:17:11 +01:00
sunrpc
SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed
2022-11-10 18:15:26 +01:00
switchdev
net: make switchdev_bridge_port_{,unoffload} loosely coupled with the bridge
2021-08-04 12:35:07 +01:00
tipc
tipc: call tipc_lxc_xmit without holding node_read_lock
2022-12-14 11:37:29 +01:00
tls
net/tls: Remove the context from the list in tls_device_down
2022-08-03 12:03:47 +02:00
unix
af_unix: Get user_ns from in_skb in unix_diag_get_exact().
2022-12-14 11:37:24 +01:00
vmw_vsock
vsock: fix possible infinite sleep in vsock_connectible_wait_data()
2022-11-10 18:15:31 +01:00
wireless
wifi: cfg80211: don't allow multi-BSSID in S1G
2022-12-08 11:28:40 +01:00
x25
net/x25: Fix skb leak in x25_lapb_receive_frame()
2022-11-26 09:24:41 +01:00
xdp
xsk: Fix backpressure mechanism on Tx
2022-10-26 12:34:40 +02:00
xfrm
xfrm: replay: Fix ESN wrap around for GSO
2022-12-02 17:41:02 +01:00
compat.c
…
devres.c
…
Kconfig
mctp: Add MCTP base
2021-07-29 15:06:49 +01:00
Makefile
mctp: Add MCTP base
2021-07-29 15:06:49 +01:00
socket.c
net: Fix a data-race around sysctl_somaxconn.
2022-08-31 17:16:45 +02:00
sysctl_net.c
…